Vacuum tube holder



W. G. LEICHNER VACUUM TUBE HOLDER Filed April 30; 1942 measures. 22, 1944 cessive degree of vibration.

or free position:

- T;E ATES mraNromcs VACUUM TUBE HOLDER William G. Lelchner, Fort Wayne, Ind., was to Farnsworth Television and Radio Corporation, a corporation of- Delaware Application April 30, 1942. Serial No. 441,218

1 Claim.

This invention relates to holders for vacuum tubes and more particularlyto such holders which are to be used nder conditions Conventional tube holders usually consist of a fiat base member to which there is attached a position illustrated involving an exnumber of contact elements which are adapted to engage the prongs of a vacuum tube. However, in radio equipment or sound reproducing the base of the tube.

Fig. 2,"but the inner diameter of ring 8 is chosen to be somewhat less than the outer diameter of the holder at the point 8. The cylindrical elements 3 and l are also spaced apart to a slightdegree as shown in Figs. 1 and 2.

The vacuum tube base III which is shown in Figs. 2 and 3 is inserted sothat its base is flush with the base I and its prongs are in full contact For a better understanding of the present in- I vention, together with other and further objects thereof, reference is hadto the following description taken in-connection with the accompanying drawing and its scope will be pointed out in the appended claim. I

Referring to the drawing:

Fig. 1 of the drawing is a plan view of a tube iliflldel constructed in accordance with this inventrated in F18. 1. the tube holder being in its open constructed inaccordance with this invention comprising a base member I to which there is ms or clamping-elements 3 and 4. Elements 3 and l are secured to base I by means of the Fig.2 isa front view of the tube holder il1us--' equipment which is to be'used in motor vehicles with contact springs 2. Ring or may then be or factory buildings where there is excessive viforced downwardly to the position illustrated in. bration, it is necessary to provide a means-for Fig. 3 to deflect the'cylindrical elements 3 and positively gripping or clamping the base of the together as illustratedin Fig. 3; at which tube whereby it may be held firmly in position tube base In is firmly gripped or clamped b and in contact with the spring' contacts to which 1 15. elements 3 and 4.. Ring 8 holds elements I and!" circuits may be connected. in this position because of the effects of frictional! The primary' object of this invention is-to pr0-. contact with them. vide a noveltube holder which is vibration proof. The modification of the invention illustrated Another object ,of this invention is to provide in Fig. 4 is similar to that shown in Figs. 1,12

a tube holder which is adapted to grip or clamp and 3, except that it consists of three cylindrical elements I2, i3 and it which are spaced apart to 'a slight degree and have a slightly smaller diamstar at the top than atthe'bottom. The rin I5 is similar to ring .8 except that its interior I to provide a stop for limiting the downward mo- 18. -3 illustrates the tube holder shown in tlon of ring I5 on thecylindrical elements I2, I3 Figs. 1 and 2 in its closed or clamping position; and II.

Fig. 4 is a top view of a modification of this v Thevacuum tube may b inserted inthis modiinvention; fication of the tube holder and firmly gripped or Fig- 5 is a frontvview of the holder shown'in clamped byimanually forcing ring I5 downwardly Fig. 4 from the direction indicated by arrows 4 into the position shown in Fig.5and rotating itin 5,6; I a counterclockwise direction from the position Flg.6 is a cross-section taken of line 6-6 in shown in Fig. 4. -When rotated approximately Fig. 4. v v cam surfaces It, I9 and 20 will so distort Fig. 1' of the drawing illustrates a tube holder the cylindrical. elements I2. l3 and. Ilthat they are forced against the] base of the vacuum tube -attached contact springs 2 and cylindrical hold-' While there has been described what is at present considered the preferred embodiment of the invention, it will be obvious to thos skilled in brackets 5 and 6 and screw 1. The cylindrical the art that various changes and m diflcations elements 3 and l are so shaped or deformed that may be made therein without departing from the their composite diameter at the top is slightly v tion. "and it is, therefore, aimed in the apless than the diameter at the bottom. the purpose p ded claim to cover all such changes and modiof which will be obvious from subsequent 'descriptflfiatigms as fall within the true spirit and scope of e ven on. Y v

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' inssid sections andpmi flnzbesmd'theontav mums: Y

A holder for radio vacuum tubes comprising a. base member,'contacts therein for engaging the prongs of a. vacuum tube, a cylindrical holdingelement on said base in register with said contacts comprising a plurality of perforated arcuate sections, at least one resilient ear on each of said sections in register with the perforations surface thereof. and a changing rin: disposed 'aroundsaid cylindrical element above said ears and comprising a. number or can surfaces on its inner surfaoeiorsaidseotinnsandb fleeting them inwardiyyhen the ring is rotated in a proper direction.

' WILLIAM G. LEICHNER. 

